Setting mechanism for alarm-clocks



(No Model.)

A. M. LANE. SETTING MBGHANISM FOR ALARM CLOCKS.

No. 403,274. Patented M3514, 1889.

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f. This spring, at the point where it surrounds UNITED STATES PATENT OEEICE.

ALMERON BI. LANF., OF MERIDFN, CONNECTICIYT.

SPECIFICATION forming part of Letters Application led July 31, 1388.

To all whom it 71mg/ concern.-

Be it known that I, ALMERON M. LANE, a citizen of the United Sta-tes, residing` at Meriden, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in. Alarm-Setting Mechanisms, of which the following is a specication.

My invention relates to improvements in alarm-setting mechanisms; and the object of my invention is to simplify the construction, thereby lessening the cost and rendering the parts more convenient to assemble and opcrate.

In the accompanying drawings, Figure l is a plan view of a clock which embodies my invention. Fig. l is a plan view of parts of said clock-movement and parts of the alarm setting and releasing mechanism. Fig. 3 is a vertical section of a clocl-case,its center shaft, and a front elevation of the setting-whcels, the plane of section being indicated by the line of Fig. i). Fig. et is avertical section of said clock-case and movement on the line y/ y of Fig. 2, together with a side elevation of the principal parts of an alarm-movein ent underneath the case. Fig. 5 is a vertical section of the detachable cap with a side elevation of the alarm-setting button and pinion mounted thereon, and Fig. C is a transverse section of the connecting-rod and releasingn arm, the plane of section. being indicated by the line ,e .e in Fig. e.

A designates the clock-case, which is cylindrical in form and contains within it a cloclmovement of a welldinown construction.

B designates the front plate of this clockmovement, upon the front of which I arrange the alarm setting and releasing mechanism.

To the movement-plate B, I secure a peculiar-shaped spring, d, most clearly shown in Fig. 4, which spring extends downwardly around the center shaft, a, and terminates at its lower end in the holdingand releasing arm the center shaft, of, bears against the camwheel h with a constant tendency to press said wheel forward, Upon the front of this cam-wheel Y), I form a sid e-acting cam, g, Figs. 5o 2 and et.

s, Fig. e,

Patent NO. 403,274, (lated May 14, 1889.

Serial No. 281,583. (No model.)

dial-wheels-viz., the hourwheel-and it is attached to the back end of the hoursocket, while the hour-hand is attached to the front end of said socket, all as in ordinary clockmovements. rlhe cam-wheel b is mounted so as to slide on the hour-socket, and its teeth correspond with those of the dial-wheel I). The pinion t, Fig. 4, meshes into and drives both of the wheels s and b, so that the cam g revolves with the hour-wheel.

In front of this cam-wheel l), I arrange a setting-wheel, C, said wheel being provided upon the side which faces the cam g with a trip-pin, 7L, Figs. 2 and 4, said pin also being shown by a broken circle in Fig. 3. The hub of this wheel C extends forward through the clock-dial, and is provided with the alarmsetting pointer 7c. On the upper part of the cloclecase, and pivoted to a lug, Z, on a detachable cap, fm, I arrange a setting-button, p, upon the side of which is a pinion, fn, that meshes into the teeth of the setting-wheel C, whereby, by turning the setting-button p the alarm-pointer k may be set as desired to bring the pin 7L into position to slip oit the shoulder of the cam g at any predetermined time. The cap m is attachably and detachably secured to the elocl-case by means of screws, an opening being left in the top of the clock-case so that the setting button and pinion can be conveniently put in place from the outside.

It should be noticed that the axis of the setting button and pinion is parallel to the center shaft, a, thereby enabling me to thus connect the setting-button with the settingwheel.

The alarnnstriking mechanism may be of any ordinary construction, and I consider it unnecessary to fully illustrate and describe the same. I prefer to secure this alarm inechanism within the base immediately under the clock, so that its hammer -lever o, Fig. 4, swings upon a vertical pivot, q. Projecting upwardly from a part of the hammerdever is a vertical. connecting-rod, r, that entends up into the clock-case by the side of the holding and releasing arm f. This connecting-rod fr vibrates laterally from right to left when the hammer is oscilla-ted by the alarm-movement. Then the pin 7L bears upon the plain face of the cam g, the holding and releasing arm f of IOC the spring d is held Within the path of the rod r, as most clearly shown in Fig. 6, so that said hamm er-lever is held and prevented from operating. When thel time-movement indicates the time for which the alarm is set, the pin h slips off the shoulder' of the cam g, thereby throwing the holding and releasing arm f forward out of the path of the rod r on the hammer-lever, as indicated by the broken lines in Fig. 6, so that the hammerflever is released and free to operate under the influence 0f the alarm-movement.

I claim as my inventionl. In an alarm-clock, the combination of the shouldered cam g, revolving With the hourwheel and sliding on the hour-socket, the set- ALMERON M. LANE.

Witnesses:

' JAMES SHEPARD,

JOHN EDWARDS, Jr. 

